Peer-reviewed research on sperm concentration, motility, DNA fragmentation, and the factors that influence male fertility, including the temperature mechanism Oakman is built around.
This study looked at whether eating ultra-processed food around the time of conception affects fertility and early embryo development in couples. It followed 831 women and 651 men from before…
This study looked at whether the intensity of physical activity affects semen quality in men who already have impaired sperm health. It followed over 1,300 men undergoing fertility evaluations, each…
This study set out to examine how exposure to fine particulate air pollution (PM2.5) and its components affects semen quality, and whether living near green spaces might help protect against…
This study set out to understand how lifestyle factors relate to semen abnormalities in men undergoing fertility evaluation in Ghana. It analyzed medical records of 221 men at a Ghanaian…
This study measured how outdoor temperature tracks with semen quality, using records from 5,114 men attending a reproductive medicine centre in Wenzhou, on China's east coast. The measure it used…
This study set out to see if sperm quality changes with the seasons in Denmark and Florida, and whether outdoor temperatures play a role. It looked at semen samples from…
This study asked whether the pandemic changed how sensitive sperm production is to weather. It took 2,672 semen analyses from 1,287 Korean men collected between 2018 and 2024 and matched…